prevaricate       
verb [ I ]  formal uk/prɪˈvær.ɪ.keɪt/ us/prɪˈver.ə.keɪt/
 支吾,搪塞,含糊其词
to avoid telling the truth or saying exactly what you think
  He accused the minister of prevaricating. 他指责部长一味搪塞。 
 
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